It's always a boost of serotonin knowing a great vacation is just around the corner. But for many Ontario residents hoping to relax on a beach in Cuba, those plans are now on hold. Ongoing fuel shortages on the island have forced airlines like Air Canada, WestJet, and Sunwing to cancel flights, leaving many travellers stuck or missing out on their planned trip.Sila Taymaz had been counting down the days to her tropical getaway after what she describes as a "terrible" winter in Thunder Bay.She tells blogTO she was scheduled to fly from her hometown to Toronto on Tuesday, followed by a connecting Sunwing flight to Varadero, Cuba. But within 24 hours of her initial departure, Taymaz says she was notified that her Varadero flight had been cancelled.At first, Taymaz says Sunwing offered her a voucher to rebook at a later date at no additional cost. Just two hours later, the airline confirmed that all affected passengers would instead receive a full refund within 21 busine...